The FSM103A is a sealed tactile switch from the FSM100-104 series designed for reliable momentary contact switching in harsh environments. It features a 0.472 inch (12 mm) body size with stainless steel contacts and silver plating, rated for 50 mA at 12 VDC with an initial contact resistance of 100 milliohms maximum. The switch offers exceptional durability with up to 1,000,000 cycles of operation, an actuation force of 160±70 grams-force, and an actuation travel of 0.014 inches (0.35 mm). Operating across a temperature range of -4°F to +185°F (-20°C to +85°C) with IP67 sealing per industry standards, the FSM103A is ideal for industrial control panels, medical equipment, and consumer electronics requiring sealed, long-life switching performance.